Vulnerability · Published Feb 2, 2026 · Assigned by VulDB
CVE-2026-1737Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion
Medium 5.3
In plain English
A medium-severity security flaw in Open5GS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Official description
A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function sgwc_s5c_handle_create_bearer_request of the file /src/sgwc/s5c-handler.c of the component CreateBearerRequest Handler. Performing a manipulation results in reachable assertion. Remote exploitation of the attack is possible. The exploit is now public and may be used. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed.
Affected products (as reported)
Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
References
- VDB-343636 | Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion vdb-entry, technical-description
- VDB-343636 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #741192 | Open5GS SGWC v2.7.6 Denial of Service third-party-advisory
- https://github.com/open5gs/open5gs/issues/4271 issue-tracking
- https://github.com/open5gs/open5gs/issues/4271#event-21968630023 issue-tracking
- https://github.com/open5gs/open5gs/issues/4271#issue-3795147720 exploit, issue-tracking
- https://github.com/open5gs/open5gs/ product